168 
Rumex maritimus L., golden dock, p. 581 
var. fueginus (Philippi) Dusén 
+R. obtusifolius L., bitter dock, blunt-leaved dock, broad-leaved 
dock, red-veined dock, p. 581 
R. orbiculatus A. Gray, see excluded taxa 
+R. patientia L., patience dock, monk’s rhubarb, passion dock, 
578 
p. 
*R. pulcher L., fiddle dock, p. 581 
+R. stenophyllus Ledeb., p. 580 
R. triangulivalvis (Danser) Rech. f., willow-leaved dock [S, G, M: 
R. mexicanus Meissner] (Rechinger, 1937; Mitchell and 
Dean, 1978) (note that there continues to be confusion 
as to the distinctness of taxa in the R. salicifolius 
complex; see Hickman (1984) for a different 
viewpoint), p. 578 
R. verticillatus L., swamp dock, water dock, p. 578 
PORTULACACEAE, purslane family 
CLAYTONIA, spring beauty 
Claytonia virginica L., Virginia spring beauty, spring beauty [S: 
incl. f. robusta (Somes) E. J. Palmer & Steyerm.] 
(Doyle, 1981), p. 636 
PORTULACA, purslane 
¢Portulaca eo Hook., portulaca, moss rose, rose moss, 
34 
p- 
P. oleracea L., common purslane, pusley, pursley [S: incl. P. 
neglecta Mackenzie & Bush, P. retusa Engelm.; G: incl. 
P. retusa] (Legrand, 1962: Matthews and Levins, 
1985b) (infraspecific variation in this complex taxon has 
not been treated satisfactorily; Danin et al. (1978) 
attempted to correlate ploidy and seed morphology and 
recognized 9 subspecies of P. oleracea, of which ssp. 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
